MESON Chess Problem Database
Problem Display
PID: 249317 (1Q3R2/q3pb2/4N2n/b1p3p1/4R1pr/p2P1kB1/K3N1rP/7B w - - 0 1)
de Haas, Bastian Evert
Schakend Nederland, 1986
#2
10 + 12
| 15601 | Albrecht-Leiss-Degener Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Bd2
- 2.Sg1#
- 1...c4
- 2.Sxg5#
- 1...Bd2
- Tries
- 1.Ka1?
- threat
- 2.Sg1#
- 2.Sxg5#
- 1...Rh5
- 2.Sg1#
- 1...Bd2
- 2.Sg1#
- 1...c4
- 2.Sxg5#
- 1...Bc3+!
- threat
- 1.Rxf7+?
- 1...Sf5
- 2.Sxg5#
- 2.Rxf5#
- 1...Sxf7!
- 1...Sf5
- 1.Qb1?
- threat
- 2.Qf1#
- 1...c4
- 2.Sxg5#
- 1...Be1!
- threat
- 1.Qb2?
- threat
- 2.Sg1#
- 1...c4
- 2.Sxg5#
- 1...Rxh2!
- threat
- 1.Qb3?
- threat
- 2.Sxg5#
- 1...Bd2
- 2.Sg1#
- 1...Rh5!
- threat
- 1.Ka1?
- Keys
- 1.Qe5!
- threat
- 2.Re3#
- 1...Bd2
- 2.Sg1#
- 1...Sf5
- 2.Qxf5#
- 1...c4
- 2.Sxg5#
- threat
- 1.Qe5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- B(f);N_PINS(C),P_PINS(H)::S(C)
- P(g);::S(H),XP(h)
- Tries
- Try
- K(B);N_SPINS(C),P-FLIGHT
- Threat
- DUALS(2)
- Vars
- R(e);::S(C)
- B(f);::S(C)
- P(g);::S(H),XP(h)
- Refutation
- B(f);CHECK
- Try
- R(J);CHECK,XB(l)
- Refutation
- S(i);XR(J)
- Try
- Q(I);
- Threat
- QAR2(I)
- Vars
- P(g);::S(H),XP(h)
- Refutation
- B(f);
- Try
- Q(I);N_SPINS(C),P_SPINS(H)
- Threat
- S(C)
- Vars
- P(g);N_PINS(H)::S(H),XP(h)
- Refutation
- R(e);XP(D)
- Try
- Q(I);
- Threat
- S(H),XP(h)
- Vars
- B(f);N_PINS(C)::S(C)
- Refutation
- R(e);
- Try
- Actual
- Q(I);
- Threat
- R1(G)
- Vars
- B(f);N_PINS(C),P_PINS(H)::S(C)
- S(i);N_GUARD,N_SPINB(l)::QAR2(I),XS(i)
- P(g);::S(H),XP(h)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).